All MIBs › DOCS-IF31-MIB › docsIf31CmStatusOfdmaUsT4Timeouts
docsIf31CmStatusOfdmaUsT4Timeouts
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmStatusOfdmaUsT4Timeouts
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.12.1.3
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: This attribute denotes the number of times counter T4 expired in the CM for this upstream channel. Discontinuities in the value of this counter can occur at re-initialization of the managed system, and at other times as indicated by the value of ifCounterDiscontinuityTime for the associated upstream channel.
What is docsIf31CmStatusOfdmaUsT4Timeouts?
A counter of how many times the T4 timer (the longer ranging-retry timeout defined in the DOCSIS MAC protocol) expired for the modem on this upstream OFDMA channel; a T4 timeout is more severe than a T3 timeout and typically leads to the modem re-initializing its MAC on that channel. Admins treat repeated T4 timeouts as a strong indicator of a persistently unusable upstream channel needing field attention; the counter can reset on system reinitialization (RFC 2863).
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.12.1.3 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmStatusOfdmaUsT4Timeouts
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.12.1.3.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmStatusOfdmaUsT4Timeouts.1
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OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.4491 | cableLabs | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2 | clabProject | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2.1 | clabProjDocsis | CLAB-DEF-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.28 | docsIf31Mib | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1 | docsIf31MibObjects | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.12 | docsIf31CmStatusOfdmaUsTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.12.1 | docsIf31CmStatusOfdmaUsEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.12.1.3 | docsIf31CmStatusOfdmaUsT4Timeouts | DOCS-IF31-MIB |